Improvement in machine for grinding harvester-knives



J. YHOdCQ/Om N 6fm ding Hom/es Zef Kn feif? W7 563 3 Pa eez, Z/f' w1 for strut ,ffice `1titru tutte Jo'siun Y. HOAGLND, or AUBURN-NEW YORK.

Leners Patenten. 75,633, deelnam. 17, 186s.

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TO ALL WHOM IT MAY CONCERN: I l

Be it known that-I, JOSIAIY. HOAGLAND, of the city of Auburn, New York, have invented a new and useful Machine for Grinding Harvester-Knives; and I hereby declare that the following is a full, clear, and

exact description thereof, and of the operation thcreofnreferenee being had to the accompanyingdrawings, in

whiehv Y Figure l is a v-iew of the whole machine, and the grindstone with which it is connected when in operation. v Figure 2 is a side view of the whole machine, connected with a grindstone, in operation. 1

Figure is u. rear view of my attachment, 'without the holder,.as -it sets upon and is attached to the upper portionofwthe frame of the grindstono.

Figure 4 is a frontviewof-the metal holder, with the cutter-bar and cutters therein. Figure 5 is the end view of the holder. Y A represents the frame which supports the grindstoue. B represents the grindstone. C represents the l 'grooved platform, which supports the standard to which the holder is affixedv D representsthe bottom-piece, -upon which the standard is cast, and which slidestupon the platfoiin'C. E represents the baseof the standard.

Freprescnts the ccntre-pieceiof the standard'. G represents the upper portion ofthe standard. H represents the upper part of theholder. I represents the under part of the holder, or that part next the grindstone. vI represents the lever, by which the cutter is pressed against the stone when being ground. a represents a guttepercha spring, which causes the machine or implement to recede` from the stone when the lever is loosened. b represents the chain, attached to the front or inner end of the machine. Ve represents the treadle, by which the chain 6 is moved. v Y

In constructing my machine, I first make the platform C ofveast iron, and three inches wide by four inches in length. A, groove is cast upon the inside of each of' the sides thereof, in which the lpiece D, upon which the standardV is east, will play. I then aix thisplatform rigidly upon one end of the frame which supports the grindstone.

I then make the bottom-piece D and the base-piece E of the standard, the whole being cast in one piece,"

and said bottom-piece of such dimensions as'to fit into thegrooves of the platform C. The base, E, I make about one undone-half inch in diameter, and about one inch in height. In this base-piece I cast or drill a i hole to receive and hold the stud of centre-piece F of the standard.

I then make the centre-piece F of sadstandard of cast iron, and of the same diameter as the said basepiece, and cast thereon a stud to iit the hole in the base-piece E. I make this piece about two and one-fourth inches in length, of the same diameter asthe other parts of the standard. The'top thereof is cast with a shoulder, bevelled both at the top and'sides, and the upper partof a curved form, so that the upper portion of the said .standard muy play towards or from the grindstone.

I then make the upper portion G of said standard, the under part thereof in such form as to iit snugly upon und to the upper partei' the centre-piece F, and of' the samediarneter, and about three inchesin length. The

face of this upper portion G is made ilat, against which the holder is drawn and held tightly.

Ithen makethe upper or outer part of the holder H of eas-t iron, with a bevelled rabbet, to form, with the metal piece I, a groove to reeeivethe back of the cutter-bar. I makev this holder about fteen inches in length.

I then .make the metal piece I, which is to form the under side of the holder, which I make .of sheet iron, and about twelve inches in length, and about one inchy in width.

Having thus described theconstruction of my machine, I will describe the manner of connecting the several part-s, and the modo oi' operation wheuin use. y

I irst affix the grooved platform C rigidly upon one end of the frame of any ordinary grindstone. I then slide the bottompiccc D, with its base-piece E, thereto attzfched, thereon. I then connect the centrepiece F with the base-piece E, and attach thereto -the upper portion G by a bolt passing through themY both. I then ailix the holder I-I I to the face of this upper portionby a screw-bolt. I then place the cuttcrgbar, with the knives or cutters thereto attached, in the groove of said holder, and fasten the same by nuts fand screws, and the machine is ready4 to 'bc operated.

It will be perceived that the centre-piece F of the standard may be turned around to any extent, and that the upper piece G maybe moved backward or forward, so that the knives or sections may be inclined toward the stone at a greater or less angle, and the holder being attached to the face of thefupper portion ofthe standard G by means of the screw-bolt passing through the centre, thereby enables the operator to turn said holder with the cutter-bars theretoattached, which forms, when thus arranged and combined, a universal joint, and enables the operator to bring the knives to the stone at any angle desired, and thereby enables him to grind the knife to any desired bevel. l

In order to press the knives against the stone as desired, I place a springof gutta. perche, a, around the standard, having pieces at the two outer corners of the platform 't'o receive and hold it, and a projection upon the inner end of the base-piece E to receive it, so that said spring will form nearly a triangle. To the inner end of said base-piece I attach one end of alight chain, b, and aiix the other end to the lever, J. When the lever is pressed backward, the base-piece, with all that is supported thereby, will be drawn to the face of the stone, and the pressure upon the lever must necessarily control the pressure ofthe knives upon the stone. When the pressure of the leverJ is removed the spring a will necessarily draw the bottom-piece, with all supported thereby, from the stone, and the operator can then readily move the cutter-bar laterally, so as to present a different knife or section to the stone to be ground, or the chain may be attached to the treadle, and the treadle worked by the foot of the operator if desired, or by reversing the bottom-piece D, with the base-piece Ethereto, attached thereon, and the gutta-percha spring reversed on corners of platform C, makes my machine a self-presser upon the grindstone.

Having thus fully described the construction of the component parts of my machine, their arrangements4 and connections, and the mode of operation thereof, what I claim as my invention, and. desire to seeureby Letters Patent, is

1. Aiiixing the machine for grinding the knives or sections of a harvester upon the frame of any ordinary grindstone, so as to bring the said knives or sections to the face of the stone to be ground, substantially as above described. a

2. 'lhe grooved platform C, in combination with the bottom-piece D and the standard E F G, substantially as and for the purpose above described. l

3. The combination of thel three parts E, F, and Ggof the standard, constructed and arranged substantially as and for the purpose described.

4. The combination of the three parts E, F, and G, with therholde'r H I, so as to form a universal joint, substantially as and for the purpose above described.`

5. Attaching a spring to the bottom-.piece D, so as to draw the cutter-bar from the stone, substantially as described.

6. The combination of the spring a, the chain b, and the lever J, substantially as and for the purpose described.

7. The combination ofl the spring a, the chain b, and 'the treadle c, substantially as and for the purpose described.

8. Attaching a spring to the bottom-piece D, so as to draw the cutter-bar to the stone, making thereby an automatic presser, substantially as and for the purpose described.

Auburn, January 6, 1868.

JOSIAH Y. HOAGLAND.

Witnesses FRANK WRIGHT, D. WRIGHT. 

